What Causes Excessive Fuel Injection?

[Peterson]

Excessive fuel injection may be caused by fuel injector dripping or damage, poor atomization of the injector, stuck needle valve, or excessive return fuel. Here is more information about fuel injection: 1. The fuel injection volume is controlled by the computer; 2. The computer calculates based on various engine operating parameters measured by sensors, such as intake air volume, engine speed, throttle opening, water temperature, intake air temperature, etc., according to the set program, and sends electrical pulses to the injector based on the calculation results; 3. The duration of each fuel injection is controlled by changing the width of each electrical pulse, thereby achieving the purpose of controlling the fuel injection volume. The wider the electrical pulse, the longer the fuel injection duration, and the greater the fuel injection volume.